主题：按照昨日账户资金设定当日止损的问题

if TACCOUNT( 4)<-50000 and tbuyholding(1)>0 and extgbdata('biaoji')=0 then begin
 tbuyshort(tsellholding(1)=0,tbuyholding(1),mkt);
 extgbdataset('biaoji',1);
end

if TACCOUNT( 4)<-50000 and tsellholding(1)>0 and extgbdata('biaoji')=0 then begin
 tbuy(tbuyholding(1)=0,tsellholding(1),mkt);
 extgbdataset('biaoji',1);
end

if time=closetime(0) then extgbdataset('biaoji',0);